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emmainna [20.7K]
2 years ago
8

For what value of C will y = sin(x - C) be an even function? a. 2π b. π c. π/2

Mathematics
2 answers:
RSB [31]2 years ago
4 0

Answer:

c.\frac{\pi}{2}

Step-by-step explanation:

We are given that

y=sin(x-C)

We have to find the  value of C for which  given function is even function.

We know that

Even function : If f(x)=f(-x) then the function is called even function.

a.2\pi

Substitute the value then we get

y= sin(x-2\pi)= sin(-(2\pi-x))=-sin (2\pi-x)=sin x

We know that sin (-x)=-sin x, sin(2\pi-x)=-sinx

We know that Sin x is an odd function , therefore, option a is incorrect.

b.\pi

Substitute the value then we get

y= sin (x-\pi)=sin(-(\pi-x))=-sin (\pi-x)=-sin x

It is an odd function.

Hence, option b is incorrect.

c.\frac{\pi}{2}

Substitute the value then we get

y= sin(x-\frac{\pi}{2})=sin(-(\frac{\pi}{2}-x))=-sin(\frac{\pi}{2}-x)=-cos x

sin(\frac{\pi}{2}-x)=cosx

We know that cos x is even function

Replace x by -x then, we get

-cos (-x)=-cos x....(cos (-x)=cos x)

Hence, the value of C=\frac{\pi}{2}  for which given function will be an even function.

Answer:c.\frac{\pi}{2}

telo118 [61]2 years ago
3 0

Answer:

you are actually incorrect the answer is  2π

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